<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>foo</title>
  <style type="text/css">
    body, html, #mount {
      width: 100%;
      height: 100%;
      margin: 0;
      padding: 0;
      font-family: monospace;
    }
    * {
      box-sizing: border-box;
    }
    ul {
       margin: 0;
       list-style: none;
    }
    li {
    }
    .item {
      height: 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      white-space: pre;
      user-select: none;
    }
  </style>
</head>
<body>
  <div id="mount"></div>

  <script src="utils.js"></script>
  <script src="helper.js"></script>
  <script>
    loadReact();
    loadScriptsAndStyles('tree.js');
  </script>
</body>
</html>
